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Do ‘Sin Stocks’ Deprive Islamic Stock Portfolios of Diversification? Some Insights from the Use of MGARCH-DCC

Author

Listed:
  • Nazrol Kamil Mustaffa Kamil

    (1International Centre for Education in Islamic Finance (INCEIF), 2International Islamic University Malaysia)

  • Obiyathulla Ismath Bacha

    (International Centre for Education in Islamic Finance (INCEIF))

  • Abul Mansur Mohammed Masih

    (International Centre for Education in Islamic Finance (INCEIF))

Abstract

There is this argument that Shari’ah compliant portfolios are at a disadvantage in terms of portfolio diversification given that the exclusion of ‘sin stocks’ shrinks the Islamic investor’s investment universe. This paper investigates first, whether there is empirical evidence to substantiate such a claim, and second, can something be done to alleviate this disadvantage. Our results show that there is statistical evidence that Islamic portfolios are deprived of some benefits of diversification, at the sector level. However, the empirical evidence does not permit us to generalise such a finding at the specific stock level. By analysing the temporal characteristics of correlations using MGARCH-DCC, we argue that Islamic portfolios can minimise loss of diversification benefit by adopting appropriate portfolio allocation strategies. In particular, market sentiment and commodity prices are two key variables that can drive portfolio allocation switching decisions. In short, while there is some evidence that investors of Shari’ah compliant portfolios are denied additional benefits of diversification, there are arguably avenues to mitigate such a disadvantage.

Suggested Citation

  • Nazrol Kamil Mustaffa Kamil & Obiyathulla Ismath Bacha & Abul Mansur Mohammed Masih, 2012. "Do ‘Sin Stocks’ Deprive Islamic Stock Portfolios of Diversification? Some Insights from the Use of MGARCH-DCC," Capital Markets Review, Malaysian Finance Association, vol. 20(1&2), pages 43-64.
    • Handle: RePEc:mfa:journl:v:20:y:2012:i:1&2:p:43-64
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    Citations

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    Cited by:

    1. Yildirim, Ramazan & Masih, Mansur, 2018. "Investigating International Portfolio Diversification Opportunities for the Asian Islamic Stock Market Investors," MPRA Paper 90281, University Library of Munich, Germany.
    2. Mokhtar, Maznita & Masih, Mansur, 2014. "Are diversification benefits obtainable within the same asset class? New evidence from Malaysian Islamic REITS," MPRA Paper 56990, University Library of Munich, Germany.
    3. Kamil, Nazrol K.M. & Bacha, Obiyathulla I. & Masih, Mansur, 2021. "Is there a diversification “cost” of Shari’ah compliance? Empirical evidence from Malaysian equities," Economic Systems, Elsevier, vol. 45(1).
    4. Kamaruzdin, Thaqif & Masih, Mansur, 2014. "An inquiry into the stability of Islamic Financial Services Institutions in terms of volatility, risk and correlations: A case study of Malaysia employing M-GARCH t-DCC and MODWT Wavelet approaches," MPRA Paper 60248, University Library of Munich, Germany.

    More about this item

    Keywords

    Portfolio diversification; Shari’ah compliant portfolios; Islamic stocks; Islamic capital market; MGARCH; dynamic conditional correlation (DCC);
    All these keywords.

    JEL classification:

    • C1 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • Z12 - Other Special Topics - - Cultural Economics - - - Religion

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